Author Archives: Robins

When SSM + Maven project is running, it is prompted that org.springframework.web.servlet.dispatcherserservlet cannot be found

When running SSM project today, an error is reported:
HTTP status 500 – error identifying servlet class org. Springframework. Web. Servlet. Dispatcherservlet
java. Lang. classnotfoundexception: org. Springframework. Web. Servlet. Dispatcherservlet

You can confirm that org. Springframework. Web. Servlet. Dispatcherservlet exists and Maven is imported normally

Problem solving method:
select item – & gt; Right click Properties – & gt; Select deployment asset – & gt; Select Add – & gt; Select Java build path entries – & gt; Next-> Select Maven dependencies – & gt; Finish-> Apply-> OK

It can solve the problem

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Link to the original text: https://blog.csdn.net/cd19930508/article/details/80256595

Error: Could not find or load main class org.apache.hadoop.hbase.util.HBaseConfTool

Error when starting HBase:

found the error for one day, and finally found that the environment variables in /etc/profile were not set, and all three servers need to be set!!!!!! Don’t forget source ~ /. Bash after setting_ profile

python3 (pip3 install threading: ERROR: Cloud not find a version that satisfies the requirement ..)

The following error occurs through PIP3 install threadings:

ERROR: Cloud not find a version that satisfies the requirement  threading
ERROR: No matching distribution found for threading

resolvent:

pip3 install thread6

Error occurred when sourcetree switches from all branches to current branch

If the branch does not have a remote branch, an error will be reported when switching from all branches to current branch: error exceeded
the solution is to push the current branch to the far end, and then switch to avoid error.

python-TypeError: list indices must be integers, not tuple Solution

Problem source: custom list [[list] [list]]

Error reason: there are few commas between arrays in the list array

Change to: list [[list], [list]]

https://careerkarma.com/blog/python-typeerror-list-indices-must-be-integers-not-tuple/

OSError: libnccl.so.2: cannot open shared object file: No such file or directory

When calling the mxnet Library in Python, it has always been wrong, as shown in the following figure, this is because the mxnet1.8.0 version is installed. Br> just remove the mxnet CUDA model from the terminal and re install version 1.7.0.

PIP install mxnet-cu100 (CUDA version) = = 1.7.0

Command errored out with exit status 1: python setup.py egg_info Check the logs for full command ou

Error installing paddlehub:

 Command errored out with exit status 1: python setup.py egg_info Check the logs for full command ou

Solution:

Update PIP and setuptools

pip install --upgrade pip
pip install --upgrade setuptools

PHP message: PHP Fatal error: Uncaught PDOException: SQLSTATE[08004] [1040] Too many connections

preface

The OJ, which was built before, suddenly made an HTTP 500 error this evening. When I opened the log, I found that the MySQL database collapsed.

Text

Then open the MySQL configuration file. The path of the configuration file is as follows

/etc/mysql/mysql.conf.d/mysqld.cnf

Max the number of links in it_ Change the connections to 1000, and then restart mysql.

Solution: pychar opens internal error

Forebay:

Open pychar software help – & gt; Edit custom VM options… File, open pycharm64.exe.vmoptions file, add

– javaagent:C :\Program Files\JetBrains\PyCharm2019.3.4\bin\JetbrainsCrack-release-enc.jar

Close the software and re open it to report an internal error

resolvent:

You can open the. Pycharm2019.3 folder (the version you downloaded) and delete it

PS: let’s take a look at the problem that win10 pychar can’t open and double-click no response

Pychar still can’t be opened. Enter the CMD as an administrator, enter the following command, and restart the computer;

netsh winsock reset

In the search box of the computer, enter windows power shell

Restart the computer, and then open pychar software, you can work normally

error: Your local changes to the following files would be overwritten by merge

The following error occurred when using git pull command today

The result is the above error prompt, translated by Youdao dictionary software, the content is (error: your local changes to the following files will be merged and covered)

Using git log — oneline to check the log, you didn’t get the code. You checked a lot of information and other big men’s blogs on the Internet

The following git instruction method is used It means to abandon local modification and directly override

1 git reset --hard
2 git pull

idea Error:java: Compilation failed: internal java compiler error

Directly adjust the value to 3000, and the default value is 700

MarkDownPad 2 HTML Reading Error

Question:

when “HTML reading error” error occurs when opening markdownpad editor